6 Play fast and loose with car seat rules.
Some things grandparents do are slightly irritating, while others are downright unsafe. While car seat rules have changed significantly over the past half-century, that’s no excuse for grandparents to decide that safely-tightened straps or a rear-facing seat simply aren’t necessary—and they shouldn’t be surprised if they don’t get to drive with their grandkids in the car if those rules go ignored.
